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ProblemsByVinFile / 2021-CHEVROLET-4500HDNHTSA data synced 6 days ago
Chevrolet
2021 Chevrolet 4500HD problems
The 2021 Chevrolet 4500HD has 2 active recall campaigns on file and only 1 owner complaint in the NHTSA database. Often that means the recall caught it before the field did.
The 2021 Chevrolet 4500HD has 1 NHTSA owner complaint and 2 recalls on file (U.S. federal records, as of September 2026). Source: NHTSA Office of Defects Investigation.
Limited NHTSA data — only 1 complaint on file. The score reflects what's reported, but a small sample skews easily. 2 active recalls on file.
0
Critical
2
Severe
0
Moderate
Should you avoid this 2021 4500HD?
Not enough data for a verdict
Only 1 NHTSA complaint on file — too few for a confident call. The 2 active recalls above remain authoritative; read those first.
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2021 4500HD· engineFire
The contact owned a 2021 Chevrolet Silverado 4500HD. The contact stated while the vehicle was parked, the contact noticed that the front end of the vehicle under the hood was in flames. The fire department was able to extinguish the fire. No police report was filed. No one was…
Had a problem with your 2021 Chevrolet 4500HD?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the master cylinder pressure sensor and inspect the wire harness, replacing it, if necessary, free of charge. Owner notification letters were mailed July 11, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222375270.
General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet 4500HD/5500HD/6500HD vehicles
Broken hex flange lock nuts may cause a loss of tension, leading to steering instability, and increasing the risk of a crash.
Fix: Dealers will replace the hex flange lock nuts as necessary, free of charge. Interim owner notification letters informing owners of the safety risk were mailed December 27, 2022. Owner notification letters were mailed February 10, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222391080.
Common questions
Is the 2021 Chevrolet 4500HD reliable?
Limited NHTSA data. Only 1 owner complaint has been filed for the 2021 Chevrolet 4500HD, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2021 Chevrolet 4500HD?
Only 1 NHTSA complaint on file — too few for a confident call. The 2 active recalls above remain authoritative; read those first. We don't issue a buy/avoid verdict on the 2021 Chevrolet 4500HD without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What should I check before buying a used 2021 Chevrolet 4500HD?
There isn't enough NHTSA complaint data on the 2021 Chevrolet 4500HD to flag a standout failure pattern. Run the VIN for open recalls — those are free to fix regardless of warranty — get a standard pre-purchase inspection, and ask the seller for service records.
Is the 2021 Chevrolet 4500HD a good used car to buy?
Hard to say from federal data alone — only 1 owner complaint has been filed. Lean on the recall list above, a pre-purchase inspection, and a vehicle-history report on the specific VIN. Our data tells you what the model is known for; a history report tells you what that exact car has been through.
What's the most common problem on the 2021 Chevrolet 4500HD?
No problem area has crossed our reporting threshold yet, which is a good sign for this vehicle.
What's the most expensive thing that goes wrong?
Major repair items haven't been flagged often enough on this vehicle to single one out.
How do I check if my Chevrolet 4500HD has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 Chevrolet 4500HD?
Hard to say from NHTSA data alone with only 1 complaint on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 6 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Chevrolet/4500HD.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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